Greetings:

Our administration occasionally wishes to send a mass email to all
students, all faculty and staff, and occasionally both. I have created
Majordomo mailing lists for this purpose and they work fine, but when
the system tries to deliver all of the messages at once, performance suffers
while delivery is in progress. The mailing list (Majordomo) server
runs sendmail 8.13.6 and the destination host runs 8.13.8. The sender
breaks it up into batches of 100 recipients each. Is there anything I can
do on either the Majordomo side or the recipient side to slow down delivery
attempts so that performance does not suffer so much while delivery is in
progress? Majordomo does add the "Precedence: bulk" header if that makes a
difference. I thought about QueueLA (on the receiving end), but the load
average doesn't really get that high (usually under 3.0) but because of all
of the I/O in /var/mail, users checking their mail see delays. Thanks...

Jim McCullars
University of Alabama in Huntsville